Re: 3D Topographical File

From: Karsten (
Date: Tue Aug 12 2003 - 05:09:22 EEST

This can be done without surface data.
If you only have spline curve data of the topo you can follow that with most
CNC programs.
I cut a land property for a client and only had spline curves to use from
With my CNC software (WorkNC) I used "on curve machining" and a ball end
mill just large enough to leave a small scallop.
I then blended the high points by hand and had my property. I did this in
about an hour with a soft foam board.
I'm sure the Rockies will be a little more detailed but the principle should
be the same.

Good Luck
Karsten A

----- Original Message -----
From: "Makai Smith" <>
To: "David K. Leigh" <>; <>
Sent: Monday, August 11, 2003 12:19 PM
Subject: RE: 3D Topographical File

It's not _that odd.
There's always the USGS DEM. They're 1/4 mi. squares, raster heights at 30m
spacing. The Z tends to be more accurate, mostly derived from 1:24k topo
quads. There are a few freeware ways to get from DEM to geometry. Start at What's the output size? How much of the Rockies
do they want? How important is accuracy?


-----Original Message-----
From: []On
Behalf Of David K. Leigh
Sent: Monday, August 11, 2003 11:32 AM
Subject: 3D Topographical File

I have an odd request from a customer. They are wanting a 3D file of the
Rocky Mountains so that they can make a replica in RP and have it metal

So, any such things out there?

David K. Leigh (254) 933-1000
Harvest Technologies, Inc. fax (254) 298-0125
Rapid Prototyping Services

-----Original Message-----
From: []On
Behalf Of Yizhong Wang
Sent: Monday, August 11, 2003 5:04 AM
To: Ismo Mäkelä
Subject: Re: stl file converting

Hi Ismo,

Many thanks for your kindness and help. The converting has been done with
DeskProto software.

Best regards,

James Wang

----- Original Message -----
From: "Ismo Mäkelä" <>
To: "Yizhong Wang" <>
Cc: <>
Sent: Monday, August 11, 2003 4:32 PM
Subject: Re: stl file converting

> Hello James,
> Please try DeskArtes 3Data Expert. You can download it from our web
> pages at and receive a free
> evaluation license to convert your files.
> Best regards,
> Ismo Mäkelä
> Yizhong Wang wrote:
> > Dear All,
> >
> > I have several stl files in binary format and want to convert them
> > into ASCII format. Would you please tell my how to do it? Many
> > thanks in advance!
> >
> > Best regards,
> >
> > James Wang
> --
> *************************************************
> Ismo Mäkelä
> Managing Director
> DeskArtes Oy
> Pihlajatie 28 tel. +358-9-644 335
> FIN-00270 HELSINKI fax. +358-9-644 330
> *************************************************

This archive was generated by hypermail 2.1.7 : Sat Jan 17 2004 - 15:17:53 EET